Electro-Thermal Response of Industrial-Grade Graphene for Electronic Packages Applications

This paper deals with the electro-thermal characterization of strips of industrial-grade graphene in view of their use as advanced novel materials for electronic packages, for instance, as Thermal Interface Materials. The analyzed material is a low-cost version of graphene, realized by combining commercial graphene nanoplatelets, and thus suitable for mass production. The electrical resistivity is shown to be almost stable with temperature, with a slightly negative derivative. The thermal conductivity is found to exhibit very good values, lower than that of pure graphene, but still interesting for practical cases. Thermal time constants are estimated in the range of seconds, providing faster thermal transients compared to classical materials.